GCN Circular 29210
Subject
GRB 201216C: TSHAO, Terskol, Mondy optical upper limits
Event
Date
2020-12-31T17:43:53Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), M. Krugov (FAI), P. Levkina
(INASAN), E. Klunko (ISTP), N. Pankov (IKI, HSE) report on behalf of
GRB IKI FuN:
We observed GRB 201216C (Beardmore et al., GCN 29061) with
Zeiss-1000 (West) telescope of TSHAO, Zeiss-2000 telescope of Terskol
observatory, and AZT-33IK telescope of Mondy observatory. The optical
afterglow (Izzo et al., GCN 29066; Jelinek et al., GCN 29070; Oates et
al., GCN 29071; Shrestha et al., GCN 29085) at possible redshift of z =
1.1 of presumably optically dark GRB (Vielfaure et al., GCN 29077) is
not detected in our observations. Preliminary photometry of the field is
following.
Date UT start t-T0 Filter Exp. OT Err. UL. Telescope
(mid, days) (s)
2020-12-17 14:20:49 0.6968 R 60*180 n/d n/d 19.8 Zeiss-1000(W)
2020-12-18 16:47:27 1.7653 R 28*180 n/d n/d 21.9 Zeiss-2000
2020-12-19 12:00:27 2.5681 R 45*120 n/d n/d 22.1 AZT-22
Photometry is based on USNO-B1.0 stars
USNO-B1.0_id R2
1065-0011134 15.33
1065-0011173 15.44
1064-0011283 16.67